Revolving door



' Feb. 21, 1939.

E. PYEREMI ET AL REVOLVING DOOR Original Filed May 26, 1952 4Sheets-Sheet 1 44 I I II III/I III! I rzr rrr 5 R O T N E V m ATTORNEYSFeb. 21, 1939. E. PEREMI ET AL 2,148,035

' REVQLVING DOOR Original Filed May 25, 1932 4 Sheets-Sheet 2 l I l lFeb. 21, 1939. I E -3M1 ET AL 2,148,035

REVOLVING DOOR Original Filed May 26, 1952 4 Sheets-Sheet s 'i n i I'IIIIIIIIIIIII 1' Feb. 21, 1939; EFLEREM} ET AL 2,148,035

REVOLVING DOOR Original Filed May 26, 1932 4 Sheets-Sheet 4 /6 270 54T70 242 I1 I I.

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allot/" 55 Patented Feb. 21, 1939 UNITED STATES REVOLVING DOOR EdmundPeremi, Manna Elmhurst, N. Y., Corporation, Lon

ration of New York sset, and Charles Kish,

assignors to General Bronze g Island Cit y, N. Y., a corpo- Originalapplication May 26, 1932, Serial No.

613,602. Divided and 5, 1935, Serial No. 34,8

. 10 Claims.

ates. to revolving doors. It e provision of improved connting the leavesof the door lumn in such manner that the ily folded either to permit theo one side of its enclosure when r to permit the leaves to fold ofemergency. It is a particuinvention to mount leaves in 10 such a waythat they will not sag or get out of alignmenueither when in radiallyoperative position or when collapsed. Owing to the positive and firmpivotal support of the door leaves, and to thefact that sagging andtwisting of the door 5 leaves are prevented when they are being folded,

the pivoting of the. door leaves is easily accomplished without dangerof the leaves becoming jammed. It is also possible to make the door withclose clearances between the parts, par- 01 ticularly between the innervertical edges of the leaves and the door co1umn,vvithout danger ofbinding between the surfaces at those-points. In this way a weathertight door is secured.

Other objects and advantages of the invention 3 Will appear from thedescription of certain preferred embodiments thereof, chosen toillustrate the principles of the invention.

The present invention is a division of our copending application SerialNo. 613,602, filed May 26, 1932, for Revolving doors, now Patent No.

Inv the accompanying drawings which illustrate such preferredembodiments:

Figure 1 is a front elevation of a door, showing the door enclosure insection;

Figure 2 is a plan view of the door with the ceiling and parts aboveomitted, and showing the door enclosurein horizontal section;

Figure 3 is a view partly in elevation and partly in central verticalsection of the upper part of one form of door;

Figure 4 is a similar vie part of the same door;

Figure 5 is afragmentary View partly in section showing the central partof the same door;

Figure 6 is a vertical sectional view of the central part of the doorcolumn shown in Figure 5, the section being at right angles to thesection shown in Figure 5;

Figure '7 is a fragmentar the portion of the door col 5 and 6;

Figure 8 is a horizontal line 8-3 .of Figure 4, lo two of the doorleaves to This invention rel has for its object th structions for mouupon the central co 5 leaves may be read door to be moved t not beingused, 0 or collapse in case lar object of the W showing the lower y viewin elevation of umn shown in Figures sectional view taken on okingupward, showing lded;

Figures 9 and 10 taken on lines 9-9 Figure 4;

Figure 11 is a vertical sectional view taken on line |l-il of Figure 3,on a larger scale;

Figure 12 is a horizontal sectional view of the side portion of a doorleaf showing a construction of weather stripping;

Figure 13 is a similar view form of weather stripping;

Figure 14 is a View partly in elevation and partly in central verticalsection showing the lower part of another modified form of revolvingdoor Figure 15 is a horizontal section taken substantially on line |5-|5 of Figure 14, looking upward;

Figure 16 is a horizontal sectional view on line l6-l6 of Figure 14;

Figure 17 is a view similar another modified construoti Figure la is ahorizontal sectional view taken substantially on line Iii-48 of Figure1'7, looking upwardshowing two of the door leaves folded.

Referring to the drawings in detail, particularly to Figures 1 and 2,revolving doors of the character involved in the present inventioncomprise a central column 10 which is mounted to rotate about a verticalaxis and which is suspended in a suitable manner in the door enclosureAl, and which carries a plurality of door leaves 54. Preferably thecolumn III is suspended from a trolley (not shown) which is mounted totravel on a horizontal track (not shown) extending across the top of thedoor enclosure and above the ceiling 44 thereof. The latter is providedwith a slot 45 through which the door column passes. At the bottom ofthe door column is a retractable pivot bolt which is received in asocket located at the center of the floor of the door enclosure, asecond socket being preferably provided near the side of the doorenclosure to receive the pivot when thedoor is collapsed and moved toone side. Mounted on the column 40 are the door leaves 54, usually fourin number, these leaves being at tached to the column by suitable hingemechanisms, preferably located near the upper and lower ends of theleaves. While four leaves are illustrated and four leaves are usuallyused in these doors, a different number of leaves may be utilized if thelayout of the building requires. For instance three leaves are sometimesemployed, which leaves would be mounted in a manner similar to thatdescribed. These hinge mechanisms permit the door leaves to be folded sothat the door may be collapsed and moved to one side this applicationAugust are vertical sectional views and l0-l0 respectively of showing amodified to Figure 14 showing on of door; and

of the door enclosure as indicated in dotted lines in Figure 2, As willbe understood, one or more of the door leaves may be folded, and in someinstances the door leaves may be folded two and two, so as to extend indiametrically opposite positions from the central column, in a wellunderstood manner. Suitable means are provided for retaining the doorleaves in spaced radial position during operation, such for instance asthe chains '60. These chains are preferably releasably secured to theleaves in .any suitable manner, for instance in one of the manners shownin our applications for patent, Serial No. 585,270, and Serial No.592,004. By the use of suitable releasable connections between the doorleaves, the latter may either be released manually when it is desired tocollapse the door and move it to one side, or such releasableconnections will give way upon the application of excessive pressure toopposite leaves of the door, such as may occur in the case of a panic,and thereby permit free passage through both sides of the door.

In Figures 3 to 10, inclusive, 10 is a supporting tube which has fixednear its upper and lower ends discs I5I, Each of these discs has in itslower face a circumferential guide groove or track I52, which preferablyis of polygonal form with rounded corners. Also formed in the lower faceof each disc are four radial guide grooves I55 which intersect thecircumferential guide grooves I52. Each of the leaves 54 is providedwith upper and lower hinge fittings I56 and I51 respectively and each ofthese fittings carries two pins I58 and I59. Each of the pins I58 haspivoted on its end a pivot slide or supporting block I60, the outer faceIBI of which is curved preferably to a radius equal to the radius of theouter wall of the round cornered portions of the circumferential guidegroove or track. The inner face I02 of each block is preferably fiat sothat the blocks are narrower at the ends than in the center. The blocksare of such form that they will travel around the round corneredpolygonal grooves, as clearly shown in Figure 8. When the door leavesare in radial position, the faces of these blocks will seat firmlyagainst the outer walls of the round cornered portions of thecircumferential grooves, spanning the grooves I55, as shown at the righthand side of Figure 8. The blocks I60 and pivots I58 thus provide meansfor supporting the leaves firmly and preventing sagging. Each of thepins I59 carries at its end a guide block I55 which slides in one of theradial guide grooves I55. These blocks I05, sliding in the radialgrooves, serve to constrain the leaves to move in definite paths whenbeing closed or opened, and prevent the tops and bottoms of the leavesfrom getting out of alignment. Blocks I50 are preferably made of suchlength that the adjacent ends of the blocks on the two inner leaves willcome into contact when the leaves are folded into parallelism, therebystopping and assisting in supporting these leaves in such parallelposition. To permit the leaves to be closely folded, as shown at theleft hand side of Figure 8, each of the leaves is provided with recessesI10 to receive the projecting portions of the corresponding discs.Suitable flap means mounted in the hinge fittings are provided forclosing these recesses when the door leaves are in radial position, soas to prevent the passage of drafts. As shown in Figures 3, 4, 8, 9 and10 a single flap member I1I is provided centrally in each recess, suchflap member being hinged along its lower edge, as shown at I12, andhaving at one end a projecting lug I13 which is engaged by the flat headI14 of a plunger I15 mounted in a recess in the hinge fitting, and urgedupwardly by a spring 116. When the flap is pushed to one side or theother, by engagement with the edge of the disc I5I, as shown in Figure8, the projection I13 will force down the plunger I15 and upon releaseof the pressure on the flap, the spring I16 will raise the plunger andreturn the flap to vertical position.

In the construction above described, the supporting tube 19 of thecentral door column is enclosed within a sleeve I30 extending betweenthe upper and lower discs I5I the sleeve I being of smaller diameterthan the column sleeves shown in the modifications described above, andhaving concave recessed portions I 8I depressed therein, the innersurfaces of the bottoms of which contact with the surface of thesupporting tube 10, thereby giving added strength and assisting inpreventing accidental deformation of the sleeve.

In Figures 5, 6, and '7, a construction for looking the operating devicefor the central door pivot and for the trolley latches is illustrated,this locking device being applicable to any of the door constructionsshown or other similar door constructions. As will be understood thedoor has a central pivot 45 at the bottom of the column and a latchoperating head I at the top of the column. These two members areconnected by rods I9] with a slide I92 located at a convenient point inthe door column. The slide I92 has a hole I93 therein adapted to receivea suitable key or tool I94 (Fig. 6), which may be inserted into the holethrough a slot I95 in the sleeve I80 and a slot I95 in the supportingtube 10. A sliding shield I91 is preferably provided for closing all butthe lowest part of the slot I95, the shield being mounted to slidebetween the tube 10 and the sleeve I89 and being limited in its movementby the engagement of a flange I98 on the back of the shield with thehead of a screw I99 inserted in the tube 10. Attached to the side of thetube 10 opposite to the slot I95 is a block 200 having two recessestherein, in which are mounted respectively locking pins 20I and 202,each of which is normally urged inwardly by a spring 203. When the slideI92 is in its lower position, as shown in Figure 6, the locking pin 20Iwill enter the hole I93 and prevent the slide I92 from moving upwardly,thereby positively locking the bottom pivot of the door in its socket.When it is desired to collapse and shift the door to the side of itsenclosure, the key I94 is inserted in the hole I93 and pushed againstthe end of the pin 20I, thereby pushing said pin out of the hole I93,and permitting the slide I92 to be moved upwardly by means of the key.When the slide has been moved to its upper position with the pivot andtrolley latch disengaged, the hole I93 is opposite to the locking pin202 and upon the withdrawal of the key I94 this pin will snap into thehole and retain the slide in raised position until the key is againinserted.

Figures 9 to 13 inclusive show a suitable construction of weather stripwhich may be used with any of the revolving doors shown, or with otherrevolving door constructions. Figures 9 and 10 show the bottom strip forthe door, comprising a flexible strip 2I0 of felt, rubber, or the likemounted in the bottom channel of a door leaf by means of the clampingstrips 2II which may be of wood, metal, or other suitable material.Figure 11 shows a construction of weather strip at the top of the doorleaf, comprising a strip 2I5 of felt, rubber or other suitable flexiblemainto parallel position so teriat clampedi between a:- pair ofserrated; jaws 2!.6: andz Zlr'lr. The; jaw- 216 is; formed: ou thechannel: member" 24 8,. fixed; to the top: rail of the doorleaf', whilethe. jaw 2H is formed on a: curved strip: member 220. which is;removably' attached to the-opposite flange of. the channel: member 218from; that which carries the: fixed". jaw 2 I 6; The.

construction applied". to the weather strip. at the side: of the door;leaf: which engages the inner surface of. the door enclosure 4|. Theweather strip at the side of the door leaf preferably comnri'ses a:tapered: rubber" strip 2.25 which. has attached. to its edge a. wearstrip. 226' of felt: composition, rubber. or the'like.

Figure 13: shows wear strip 2-26 and which has an enlarged base 2H whichis received in a groove 232? formed in the edge of the door leaf. Onewall 233 of: the groove: is made removable so asto permitinsertion. and.removal of the weather strip- InlFigures 14,15 and 16 another form ofhinge these figures, the supporting tube 10 of the door a disc 240, it

groove ortrack 24.2 andini the lower face. of the grooves. thereto isprovided with a lower hinge fitting 255 and with a similar upper radialgrooves 243 and which follows one of the diverging curvedsurfaces 244when the door leaf is folded, as shown at the left hand side of Figure15. The hinge fittings are also provided with lugs 263 adapted to engagewith the proper notches 25l when the leaves are fully collapsed, so asto support the leaves against sagging in that position. The adjacentlugs 263 on the hinge fittings of the inner pair of leaves are adaptedto contact when the leaves are folded as to stop the leaves in thatposition. Each leaf is firmly supported and caused to move in aconstrained path, by the engagement of rollers 25! on the pins 256 atthe top and bottom of each leaf, in the corresponding annular grooves inthe discs and by the engagement of the pins 260 in the radial grooves243.

edges of the. discs 240.

When. the leaves are. fully folded one of the. lugs 263 on each. of the;outer.- leaves, the pins 250i of? which have left the; radial grooves243, Will .611?" gage with one; of. the notches; 2'5l. and therebyfirmly support such leaves against sagging... As: in. the forms of doordescribed above, the sup porting tube 70' of the door is enclosed withina. suitable sleeve 270, as shown in Figure 16.. In order to-enable theleaves to fold; closely they are slotted as indicated: at. 275,. so asto receive the: To close the outer. part of such slots when the leavesare in radial posi tion; spring flaps 276 pivoted on vertical pivots211. When the. leaves are in radial position, the ends of these flapsextend into the grooves 241.

Another form of door hinge construction is shown in Figures 17 and 18which is similar in:

In this construction upper andlower discs are fixed. to the supportingtube 18,. the lower disc only being shown at 2.90. Each. of these discshas a guide groove oritrack 28L in.- its upper face, the groove beingformed of four are shaped sections as indicated in Figure 18, adjacentsections joining in the cusp-like in tersections 292.

In the'lower face of the disc are formed radial grooves: 293, the wallsof which merge into outwardly diverging walls 2%; so as toform flaring.mouths for the grooves. Fixed in the lower face of the: disc are fourbearing pins. 295.. The door 18; travel on the curved-surfaces. 2 94.The hinge fittings 295 are also provided with lugs 303 adapted to engagewith: the proper pins 295' when the doorleaves are fully collapsed so asto-support the leaves against sagging when in that are foldedintoparallelisnr, and thereby stop the leaves in that position. Toprevent leakage through the slots in the leaves which are formed toclearthe edges of the discs 290', spring flaps {5 3 35 are provided.

and travelling in said radial tracks.

In a revolving door, column, a plurality of door leaves, members mountedon said column are provided. which are:

column, a plurality of door and arranged to slide in said generallysquare tracks and guide members attached to the leaves and travelling insaid radial tracks.

3. In a revolving door, a central supporting leaves, discs pivoted tosaid leaves and each having a generally square track, rounded at thecorners and with radial tracks which intersect the square track at thecorners, blocks pivoted to said leaves and arranged to travel in saidgenerally square tracks, and guide members attached to said leavesnearer to the inner edges thereof than the points on the leaves at whichsaid blocks are pivoted, said guide members being arranged to travel insaid radial tracks.

4. In a revolving door, a central supporting column, a plurality of doorleaves, discs mounted on said column having circumferential trackstherein and also being provided with radial grooves whose walls areparallel for a substantial distance and then separate to form flaringmouths, a single supporting member on'each leaf arranged to travel inthe circumferential track of one of said discs and guide pins on theleaves arranged to travel into and out of said flaring mouthed, radialgrooves when the leaves are opened or folded.

5. In a revolving door, a central supporting column, a plurality of doorleaves, discs mounted on said column having circumferential trackstherein and also being provided with radial grooves terminating inflaring mouths, supporting members on the leaves arranged to travel insaid circumferential tracks and guide pins on the leaves arranged totravel into and out of said flaring mouthed, radial grooves when theleaves are opened or folded, and supporting members fixed with relationto said discs formed to inter-engage with lugs on the inner faces of theoutermost leaves when the leaves are folded into parallel positions.

6. In revolving door construction, a central column, a plurality of doorleaves pivotally mounted thereon, said door leaves having recessesextending therethrough to clear portions of the mechanism when saidleaves are folded, flaps pivoted centrally in said recesses, lugsprojecting from the ends of said flaps, and spring pressed plungersengaging said lugs for yieldingly maintaining said flaps in planesparallel with the planes of the respective leaves on which the flaps aremounted.

'7. In revolving door construction, a central supporting column, aplurality of door leaves carried thereby, a retractable central doorpivot mounted at the lower end of said column, a slide in said columnoperatively connected to said pivot, said slide having a transverse holetherethrough, and locking means for said slide comprising upper andlower latch pins mounted in said column, one or the other of which isadapted to engage in the hole in said slide and to be released from saidhole by the insertion of a key through the hole.

8. In a revolving door, a central supporting column, a plurality of doorleaves, members mounted on said column provided with annular tracksextending continuously around the column and with radial slots whichintersect the annular tracks at equally spaced intervals, guide membersattached to the leaves and travelling at all times in said annulartracks and guide members attached to the leaves and travelling in saidradial slots.

9. In a'revolving door, a central supporting column, a plurality of doorleaves, members mounted on said column provided with annular tracksextending continuously around the column and with radial slots whichintersect the annular tracks at their points of maximum radius, guidemembers attached to the leaves and travelling at all times in saidannular tracks and guide members attached to leaves and travelling insaid radial slots.

10. In a revolving door, a central supporting column, a plurality ofdoor leaves, members mounted on said column, each provided with anannular track of non-circular form having portions of maximum radius andportions of a decreased radius, and with radial tracks intersecting saidannular track at its points of maximum radius, blocks pivoted to saidleaves and arranged to travel in said annular track and stand in thesaid annular track at said positions of maximum radius when the leavesare in radial position and to stand in said positions of decreasedradius on said annular track when the said leaves are folded, and guidemembers attached to said leaves nearer to the inner edge thereof thanthe points on the leaves at which the said blocks are pivoted, saidguide members being arranged to travel in said radial tracks.

EDMUND PEREMI. CHARLES KISH.

